If you look at the rim flanges on both your new globe and on mine, you will see that they are both slim and well made, not a sign of apprentice work at all. The globes too, are of a very pleasing "right-ness" in balance and execution.
However, training of apprentices was definitely happening - I have always assumed that fine delicate features, along with some clumsy ones, might indicate an experienced maker and an apprentice working together.
It was the Boffos who taught the workers at Mdina how to make elegant slim flanges.
Pre-Boffo, there were button rims and thick cup-shaped ones, or none at all.